863261 has 4 divisors (see below), whose sum is σ = 986592. Its totient is φ = 739932.

The previous prime is 863251. The next prime is 863279. The reversal of 863261 is 162368.

863261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 863261 - 2⁶ = 863197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 863261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61655 + ... + 61668.

It is an arithmetic number, because the mean of its divisors is an integer number (246648).

2⁸⁶³²⁶¹ is an apocalyptic number.

It is an amenable number.

863261 is a deficient number, since it is larger than the sum of its proper divisors (123331).

863261 is a wasteful number, since it uses less digits than its factorization.

863261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123330.

The product of its digits is 1728, while the sum is 26.

The square root of 863261 is about 929.1183993442. The cubic root of 863261 is about 95.2169005256.

The spelling of 863261 in words is "eight hundred sixty-three thousand, two hundred sixty-one".